Hello, I stumbled on this post while looking for a solution to my PR600 problem. I bought it through Fasttech and although the light itself is stellar, it looks like I got dud batteries. After full charge, the lights would barely hold 40 mins at 600 lumens (with 2 hours given as an avarge by Ravemen). After a few recharge cycles, the charge light stopped turning to green, indicating batteries charged, and stays red no matter how long I have the light plugged.
I switched to electronic cigarettes 4 years ago and as a result have a few spare new 18650s (Sony US18650 VTC5 2600mAh to be precise). I was wondering if you could tell me how easy (and safe) it would be to replace the batteries. Would it require soldering?
I generally don’t like to deal with Fasttech returns since they have taken more than 2-3 months in the past.
I’d appreciate any insight you could provide.
Cheers